Table 3.

Odds-ratios from logistic regression equations predicting DSM-IV marijuana dependence and/or abuse diagnosis (N = 718 for the classification GMM, and N = 652 for the diagnostic DSM-IV outcome). Results are based on a multiple imputation analysis using 10 replicate data sets.

Variables	Bivariate		N1		N2		N3		N4
	e^b	(t)	e^b	(t)	e^b	(t)	e^b	(t)	e^b	(t)
Classification
Early-onset marijuana use									6.89	(6.87)^***
Adolescent-onset marijuana use									6.48	(7.80)^***
Fundamental causes/background^a
Age at Wave 6	1.63	(4.79)^***	1.64	(4.76)^***	1.56	(4.23)^***	1.37	(2.88)^**	1.45	(2.92)^**
Stressors^b
Negative events (z)	1.39	(3.75)^***	1.33	(2.93)^**	1.25	(2.25)^*	1.07	(.66)	1.08	(.65)
Perceived discrimination (z)	1.27	(2.79)^**	1.12	(1.22)	1.10	(1.00)	1.04	(.41)	1.04	(.37)
Parent alcohol abuse (ever)	1.52	(2.17)^*	1.19	(.84)	1.11	(.51)	1.10	(.46)	1.00	(.01)
Parent major depression (ever)	1.72	(2.57)^*	1.68	(2.17)^*	1.59	(1.92)⁺	1.47	(1.59)	1.52	(1.57)
Support^c
Psychosocial
Positive school attitudes (z)	.70	(4.21)^***			.81	(2.21)^*	.86	(1.55)	.91	(.91)
Feelings of anger (z)	1.28	(2.69)^**			1.07	(.62)	1.07	(.66)	1.01	(.09)
Depressive symptoms (z)	1.39	(3.38)^**			1.11	(.90)	.99	(.06)	.93	(.59)
Friend delinquency (z)	2.04	(7.40)^***					1.73	(4.63)^***	1.43	(2.69)^**
Intercept			−1.069	(11.43)^***	−1.083	(11.42)^***	−1.122	(11.38)^***	−1.940	(13.19)^***

Notes: Variables are entered in groups in models N1–N4. Coefficients for the intercept are logit coefficients; other coefficients are odds-ratios.

The other background characteristics were not significant so they have been omitted.

The other stressor variables were not statistically significant.

The social support measures were not statistically significant.

⁺

p < .1.

p < .05.

^**

p < .01.

^***

p < .001.